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Re: UJ verses CV joints (What's the main difference?)

To: support@leesoftware.com, triumphs@autox.team.net
Subject: Re: UJ verses CV joints (What's the main difference?)
From: "sujit roy" <sujitroy@hotmail.com>
Date: Thu, 16 Sep 1999 12:08:56 PDT
I'm in the US, but saw them advertized in a Stag mag. in the UK.  I've heard 
from another source that the TR6 shafts are the same.  Maybe I can get a 
pair of them for the Stag.  However, some more investigation is needed.
Sujit


>From: "LeeSoftWare" <support@leesoftware.com>
>Reply-To: "LeeSoftWare" <support@leesoftware.com>
>To: <triumphs@autox.team.net>
>Subject: Re: UJ verses CV joints (What's the main difference?)
>Date: Thu, 16 Sep 1999 14:52:25 -0400
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>From triumphs-owner@autox.team.net Thu Sep 16 11:53:04 1999
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>but
>
>Where are these shafts available?
>
>Lee Thompson
>'71 Stag
>
>----- Original Message -----
>From: Jim Hill <Jim_Hill@chsra.wisc.edu>
>To: <triumphs@autox.team.net>
>Sent: Thursday, September 16, 1999 2:47 PM
>Subject: RE: UJ verses CV joints (What's the main difference?)
>
>
> >
> >
> >
> > On Thursday, September 16, 1999 12:13 PM, sujit roy
> > [SMTP:sujitroy@hotmail.com] wrote:
> > >
> > > I've seen after market half shafts advertised for the Stag with CV
>joints
> > > compared to the Standard UJs'  What's the major difference between the
>two
> >
> > > types of joints?
> >
> > As I understand it:
> > The design of CV joints allows them to operate at high angles (over 40
> > degrees) - enough to cope with suspension travel and some lateral
>movement,
> > while providing a constant velocity to the axle regardless of the
>operating
> > angle. The CV joint can be thought of as essentially two universal 
>joints
> > connected together at an angle. When lateral play is required, this 
>angle
> > increases or decreases.
> > On an IRS TR rear axle, the standard u-joints do not allow sufficient
> > suspension movement without binding. As the rear A-arm drops down
>vertically
> > and the dif stays in place, the distance between the dif and the hub
>becomes
> > greater - resulting in lateral stress.
> > To solve this problem, the TR axle is splined to allow the two parts of
>the
> > axle to slide back and forth, thus changing the effective length of the
> > axle. If (or rather "when") the two parts of the axle lock together 
>under
> > hard cornering, suspension damage is the likely result - sometimes with
> > catastrophic results. The CV axles do NOT need sliding spline axles.
> >
> > The Stag CV joint rear axles are, I believe, the same as the ones I've
> > installed on my TR6.
> >
> > Jim Hill
> > Madison
> >
>


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